The drills can be used for the drill press.
The Chuck on the press can handle up to a 1/2" drill bit.
The drill bits are General purpose drill bits. Suited for metals, plastics, and woods.
They are not for hardened or heat treated metals, or for concrete or stone.
For heat treated/hardened metals you will need specialty carbide drills.
And for concrete / stone you will need specialty masonry bits.